Closed captions: Refers to on-screen text that captures spoken words as well as sounds and actions that are occurring on-screen. Closed captions are normally
displayed as white text against a black background and used for viewers who understand the language being spoken but are either deaf or hard-of-hearing.
Subtitles: Refers to on-screen text that is used to capture words that are being spoken in a film or video. Subtitles are usually displayed as 1-2
lines of yellow text and are used for viewers who can hear but do not understand the language being spoken.
Subtitles for the Deaf or Hard of Hearing (SDH): These are subtitles (captions)
that include non-spoken details or information about what is happening in a video such as sound effects or music playing.